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<head><meta charset="utf-8"><title>weekly meeting 2019-06-13 #54818 · t-compiler · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/index.html">t-compiler</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html">weekly meeting 2019-06-13 #54818</a></h3>

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<a name="168040202"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168040202" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168040202">(Jun 13 2019 at 12:33)</a>:</h4>
<p>Hi @T-compiler/meeting ; the triage meeting will be starting in 1 hour 27 minutes</p>



<a name="168040281"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168040281" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168040281">(Jun 13 2019 at 12:35)</a>:</h4>
<p>I will be doing <a href="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-06-13.20.2354818/near/168040258" title="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-06-13.20.2354818/near/168040258">pre-triage in a parallel topic</a></p>



<a name="168040534"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168040534" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168040534">(Jun 13 2019 at 12:39)</a>:</h4>
<p><span class="user-mention" data-user-id="123586">@nagisa</span> are you around today? Just wondering if <span class="user-group-mention" data-user-group-id="1176">@WG-llvm</span> has anything to report.</p>



<a name="168040592"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168040592" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168040592">(Jun 13 2019 at 12:40)</a>:</h4>
<p>Likewise, <span class="user-mention" data-user-id="127859">@Taylor Cramer</span> or <span class="user-mention" data-user-id="116009">@nikomatsakis</span> : is there anything to report at triage meeting regarding <span class="user-group-mention" data-user-group-id="1172">@WG-async-foundations</span> ?</p>



<a name="168040997"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168040997" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168040997">(Jun 13 2019 at 12:46)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> yep, I can do that</p>



<a name="168041753"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168041753" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Nikita Popov <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168041753">(Jun 13 2019 at 12:56)</a>:</h4>
<p>On the LLVM side, I think the only thing that happened is that <span class="user-mention" data-user-id="121053">@varkor</span> switched float min/max to use LLVM intrinsics, after I fixed a small codegen issue on x86 (<a href="https://github.com/rust-lang/rust/issues/18384" target="_blank" title="https://github.com/rust-lang/rust/issues/18384">#18384</a>). I'm working to get CVP nowrap inference reenabled in LLVM, but fell into the rabbit hole that is LFTR (<a href="https://reviews.llvm.org/D60935" target="_blank" title="https://reviews.llvm.org/D60935">D60935</a>, <a href="https://reviews.llvm.org/D62939" target="_blank" title="https://reviews.llvm.org/D62939">D62939</a>). I'm now very depressed about poison and undef semantics in LLVM.</p>



<a name="168047712"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168047712" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168047712">(Jun 13 2019 at 14:02)</a>:</h4>
<p>Okay hi <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span></p>



<a name="168047735"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168047735" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168047735">(Jun 13 2019 at 14:03)</a>:</h4>
<p>(sorry for not using the right format for notifying everyone in the message up top; that was a cut-and-paste mistake that I'll need to fix in my template.)</p>



<a name="168047893"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168047893" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168047893">(Jun 13 2019 at 14:04)</a>:</h4>
<p>so, first of all: Any announcements?</p>



<a name="168048233"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048233" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048233">(Jun 13 2019 at 14:08)</a>:</h4>
<p>Here's my "announcement": today I want to make sure we traverse the I-nominated list. We forgot to do it last week, and I do not know the last time that we <em>did</em> do a full traversal of it.</p>



<a name="168048248"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048248" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048248">(Jun 13 2019 at 14:08)</a>:</h4>
<p>(I didn't quite finish all the pre-triage; there were still six nominated unprioritized bugs that I didn't traverse; traversing the I-nominated list will just have to include those...)</p>



<a name="168048302"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048302" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048302">(Jun 13 2019 at 14:09)</a>:</h4>
<p>we have 37 <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+">open P-high issues</a>, 15 of which are <a href="https://github.com/rust-lang/rust/issues?q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+no%3Aassignee" target="_blank" title="https://github.com/rust-lang/rust/issues?q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+no%3Aassignee">unassigned</a></p>



<a name="168048401"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048401" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048401">(Jun 13 2019 at 14:10)</a>:</h4>
<p>there are also 7 open <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+label%3Aregression-from-stable-to-beta++-label%3AP-high++-label%3AP-medium+-label%3AP-low+-label%3AT-libs+-label%3AT-infra+-label%3AT-rustdoc" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+label%3Aregression-from-stable-to-beta++-label%3AP-high++-label%3AP-medium+-label%3AP-low+-label%3AT-libs+-label%3AT-infra+-label%3AT-rustdoc">stable-to-beta regressions</a> for our team with no prioritization. There may or may not be overlap between those and the P-high issues.</p>



<a name="168048464"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048464" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048464">(Jun 13 2019 at 14:11)</a>:</h4>
<p>But lets get the really easy thing out the way: <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=label%3Abeta-nominated+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=label%3Abeta-nominated+label%3AT-compiler">beta-nomination(s)</a></p>



<a name="168048467"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048467" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Zoxc <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048467">(Jun 13 2019 at 14:11)</a>:</h4>
<p><code>TyCtxt</code> has one less lifetime, that's probably quite noticeable though =P</p>



<a name="168048540"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048540" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048540">(Jun 13 2019 at 14:12)</a>:</h4>
<p>beta-nomination: "Handle index out of bound errors during const eval without panic" <a href="https://github.com/rust-lang/rust/issues/61598" target="_blank" title="https://github.com/rust-lang/rust/issues/61598">#61598</a></p>



<a name="168048638"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048638" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048638">(Jun 13 2019 at 14:13)</a>:</h4>
<p>(... its possible there was an implicit stable-nomination intended for <a href="https://github.com/rust-lang/rust/issues/61598" target="_blank" title="https://github.com/rust-lang/rust/issues/61598">#61598</a>, given <a href="https://github.com/rust-lang/rust/pull/61598#issuecomment-499636051" target="_blank" title="https://github.com/rust-lang/rust/pull/61598#issuecomment-499636051">this comment</a>)</p>



<a name="168048699"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048699" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048699">(Jun 13 2019 at 14:14)</a>:</h4>
<p>(but let's resolve the beta backport question first)</p>



<a name="168048764"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048764" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048764">(Jun 13 2019 at 14:15)</a>:</h4>
<p>the information on the bug being fixed (<a href="https://github.com/rust-lang/rust/issues/61595" target="_blank" title="https://github.com/rust-lang/rust/issues/61595">#61595</a>) nor the PR itself (<a href="https://github.com/rust-lang/rust/issues/61598" target="_blank" title="https://github.com/rust-lang/rust/issues/61598">#61598</a>) does not indicate when this regression was injected.</p>



<a name="168048847"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048847" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048847">(Jun 13 2019 at 14:16)</a>:</h4>
<p>The main benefit of a backport here is that you get a nicer diagnostic for your erroneous code, right?</p>



<a name="168048852"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048852" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048852">(Jun 13 2019 at 14:16)</a>:</h4>
<p>It doesn't seem like anyone present is interested in arguing <strong>for</strong> a backport.</p>



<a name="168048860"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048860" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048860">(Jun 13 2019 at 14:16)</a>:</h4>
<p>So I'm just going to decline it in that case</p>



<a name="168048881"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048881" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048881">(Jun 13 2019 at 14:16)</a>:</h4>
<p>hup I just saw a vote for backport from <span class="user-mention" data-user-id="119031">@Esteban Küber</span></p>



<a name="168048901"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048901" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048901">(Jun 13 2019 at 14:17)</a>:</h4>
<p><span class="user-mention" data-user-id="119031">@Esteban Küber</span> :  You want to say anything to sway <span class="user-mention" data-user-id="116466">@Zoxc</span> (or me) ?</p>



<a name="168048938"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048938" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048938">(Jun 13 2019 at 14:17)</a>:</h4>
<p>It's an ice, the nicer diagnostic is just a consequence of not iceing</p>



<a name="168048941"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048941" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Zoxc <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048941">(Jun 13 2019 at 14:17)</a>:</h4>
<p>It's just seems like a nice to have thing. We seem to emit a relevant error already?</p>



<a name="168048963"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168048963" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168048963">(Jun 13 2019 at 14:17)</a>:</h4>
<p>Ices are bad for rls users</p>



<a name="168049023"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049023" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049023">(Jun 13 2019 at 14:18)</a>:</h4>
<p>I lean towards fixing it. It's a regression and the patch is small and seems "obviously ok"</p>



<a name="168049027"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049027" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049027">(Jun 13 2019 at 14:18)</a>:</h4>
<p>Doesn't affect people using rustc or cargo</p>



<a name="168049051"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049051" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049051">(Jun 13 2019 at 14:18)</a>:</h4>
<blockquote>
<p>Ices are bad for rls users</p>
</blockquote>
<p>(maybe this is something we should consider addressing, unless we can seriously up our game when it comes to fixing ICE's)</p>



<a name="168049054"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049054" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049054">(Jun 13 2019 at 14:18)</a>:</h4>
<p>(it is stable to stable, which I think we've traditionally considered lesser priority, but the point about RLS I found persuasive)</p>



<a name="168049110"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049110" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Zoxc <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049110">(Jun 13 2019 at 14:19)</a>:</h4>
<p>Doesn't RLS recover from ICEs?</p>



<a name="168049222"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049222" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049222">(Jun 13 2019 at 14:20)</a>:</h4>
<p><span class="user-mention" data-user-id="119031">@Esteban Küber</span> : were you saying ICE's are bad for RLS users because you miss out on errors further in compilation that you'd normally get from compilre internally recovering?</p>



<a name="168049227"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049227" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049227">(Jun 13 2019 at 14:20)</a>:</h4>
<p>Not gracefully in large codebases</p>



<a name="168049238"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049238" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049238">(Jun 13 2019 at 14:20)</a>:</h4>
<p>or is there something deeper / more severe that goes wrong?</p>



<a name="168049241"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049241" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049241">(Jun 13 2019 at 14:20)</a>:</h4>
<p>That argument would also go for cli users</p>



<a name="168049248"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049248" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049248">(Jun 13 2019 at 14:20)</a>:</h4>
<p>(true)</p>



<a name="168049257"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049257" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049257">(Jun 13 2019 at 14:20)</a>:</h4>
<p>Imo if something is risk free then backporting is OK when it does have value to do so</p>



<a name="168049266"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049266" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049266">(Jun 13 2019 at 14:21)</a>:</h4>
<p>and it does have value to do so</p>



<a name="168049290"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049290" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049290">(Jun 13 2019 at 14:21)</a>:</h4>
<p>Okay well this PR does seem pretty low-risk to me.</p>



<a name="168049312"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049312" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049312">(Jun 13 2019 at 14:21)</a>:</h4>
<p>(imo let's backport)</p>



<a name="168049315"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049315" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049315">(Jun 13 2019 at 14:21)</a>:</h4>
<p>we probably should firm up our guidelines/policies when it comes to backports</p>



<a name="168049337"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049337" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049337">(Jun 13 2019 at 14:21)</a>:</h4>
<p>which would be good to incorporate into the upcoming planning meeting regarding triage/prioritization/etc</p>



<a name="168049348"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049348" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049348">(Jun 13 2019 at 14:22)</a>:</h4>
<p>I've seen iced make the rls crash and start reindexing from scratch which block my editor for a significant amount of time on a big project im in</p>



<a name="168049399"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049399" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049399">(Jun 13 2019 at 14:22)</a>:</h4>
<p>Okay, approved for backport. Lets move on</p>



<a name="168049572"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049572" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049572">(Jun 13 2019 at 14:23)</a>:</h4>
<p>there are 3 <a href="https://github.com/rust-lang/rust/pulls?q=is%3Aopen+is%3Apr+label%3AS-waiting-on-team+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/pulls?q=is%3Aopen+is%3Apr+label%3AS-waiting-on-team+label%3AT-compiler">PR's waiting on our team</a></p>



<a name="168049647"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049647" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049647">(Jun 13 2019 at 14:23)</a>:</h4>
<p>"Stabilize support for Profile-guided Optimization" <a href="https://github.com/rust-lang/rust/issues/61268" target="_blank" title="https://github.com/rust-lang/rust/issues/61268">#61268</a> -- may just be an artifact of FCP process?</p>



<a name="168049725"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049725" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049725">(Jun 13 2019 at 14:24)</a>:</h4>
<p>no, that was false</p>



<a name="168049727"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049727" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049727">(Jun 13 2019 at 14:24)</a>:</h4>
<p>afaik that's ready to go</p>



<a name="168049731"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049731" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049731">(Jun 13 2019 at 14:24)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span>  yes, things in FCP should be -waiting-on-team</p>



<a name="168049758"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049758" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049758">(Jun 13 2019 at 14:24)</a>:</h4>
<p>but we approved it? 9 days ago?</p>



<a name="168049765"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049765" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049765">(Jun 13 2019 at 14:24)</a>:</h4>
<p>once it finishes I'll just r=alex</p>



<a name="168049771"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049771" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049771">(Jun 13 2019 at 14:25)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> FCP has not finished</p>



<a name="168049790"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049790" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049790">(Jun 13 2019 at 14:25)</a>:</h4>
<p>okay maybe we need a S-waiting-on-universe</p>



<a name="168049798"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049798" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049798">(Jun 13 2019 at 14:25)</a>:</h4>
<p>next</p>



<a name="168049822"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049822" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049822">(Jun 13 2019 at 14:25)</a>:</h4>
<p>"rustdoc: make #[doc(include)] relative to the containing file" <a href="https://github.com/rust-lang/rust/issues/60938" target="_blank" title="https://github.com/rust-lang/rust/issues/60938">#60938</a></p>



<a name="168049824"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049824" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049824">(Jun 13 2019 at 14:25)</a>:</h4>
<p>(waiting on fcp rather)</p>



<a name="168049953"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049953" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049953">(Jun 13 2019 at 14:26)</a>:</h4>
<p>seems like this might need an owner within T-compiler responsible for review/feedback</p>



<a name="168049983"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168049983" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168049983">(Jun 13 2019 at 14:27)</a>:</h4>
<p>but it also doesn't seem worth blocking this meeting on finding that "volunteer"</p>



<a name="168050001"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050001" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050001">(Jun 13 2019 at 14:27)</a>:</h4>
<p>last: "Turn HIR indexing into a query" <a href="https://github.com/rust-lang/rust/issues/59064" target="_blank" title="https://github.com/rust-lang/rust/issues/59064">#59064</a></p>



<a name="168050040"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050040" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050040">(Jun 13 2019 at 14:28)</a>:</h4>
<p>I don't see any record here of progress on an end-to-end plan here</p>



<a name="168050087"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050087" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050087">(Jun 13 2019 at 14:28)</a>:</h4>
<p>do we need to dedicate a planning meeting to this topic?</p>



<a name="168050097"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050097" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050097">(Jun 13 2019 at 14:28)</a>:</h4>
<p>I'll suggest that on the PR itself.</p>



<a name="168050099"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050099" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050099">(Jun 13 2019 at 14:28)</a>:</h4>
<p>I think so, I was just saying that to <span class="user-mention" data-user-id="119009">@eddyb</span> yesterday</p>



<a name="168050108"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050108" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050108">(Jun 13 2019 at 14:28)</a>:</h4>
<p>(in an offhand conversation...)</p>



<a name="168050121"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050121" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050121">(Jun 13 2019 at 14:28)</a>:</h4>
<p>if I recall <span class="user-mention" data-user-id="124287">@mw</span> had some specific concerns</p>



<a name="168050125"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050125" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050125">(Jun 13 2019 at 14:28)</a>:</h4>
<p>(also)</p>



<a name="168050151"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050151" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050151">(Jun 13 2019 at 14:28)</a>:</h4>
<p>okay, now the fun stuff</p>



<a name="168050162"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050162" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050162">(Jun 13 2019 at 14:29)</a>:</h4>
<p>(or maybe those were on some other PR)</p>



<a name="168050180"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050180" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050180">(Jun 13 2019 at 14:29)</a>:</h4>
<p>we have 18 <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+label%3AI-nominated+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+label%3AI-nominated+label%3AT-compiler">I-nominated T-compiler issues</a></p>



<a name="168050185"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050185" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050185">(Jun 13 2019 at 14:29)</a>:</h4>
<p>and I really want to try to get through all of them, if only superficially</p>



<a name="168050198"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050198" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Zoxc <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050198">(Jun 13 2019 at 14:29)</a>:</h4>
<p>My opinion is to merge the first PR in my series and discuss the other ones.</p>



<a name="168050201"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050201" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050201">(Jun 13 2019 at 14:29)</a>:</h4>
<p>lets go <a href="https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AI-nominated+label%3AT-compiler+sort%3Acreated-asc" target="_blank" title="https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AI-nominated+label%3AT-compiler+sort%3Acreated-asc">older first</a></p>



<a name="168050345"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050345" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050345">(Jun 13 2019 at 14:30)</a>:</h4>
<blockquote>
<p>My opinion is to merge the first PR in my series and discuss the other ones.</p>
</blockquote>
<p>( it might be good to state that opinion on the PR; the dialogue there makes it seem like we're blocked on overall planning for the series of PR's)</p>



<a name="168050361"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050361" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050361">(Jun 13 2019 at 14:30)</a>:</h4>
<p>(<span class="user-mention" data-user-id="116083">@pnkfelix</span>  for future meetings I would suggest segmenting and doing the p-high ones first)</p>



<a name="168050365"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050365" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050365">(Jun 13 2019 at 14:30)</a>:</h4>
<p>first nominated issue: "<code>single_use_lifetimes</code> warns when deriving a struct" <a href="https://github.com/rust-lang/rust/issues/53738" target="_blank" title="https://github.com/rust-lang/rust/issues/53738">#53738</a></p>



<a name="168050411"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050411" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050411">(Jun 13 2019 at 14:31)</a>:</h4>
<p>I bascially wanted to check about prioritization here</p>



<a name="168050415"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050415" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050415">(Jun 13 2019 at 14:31)</a>:</h4>
<p>I applied P-medium</p>



<a name="168050425"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050425" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050425">(Jun 13 2019 at 14:31)</a>:</h4>
<p>because I cannot imagine it matters to most of our current users</p>



<a name="168050485"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050485" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050485">(Jun 13 2019 at 14:32)</a>:</h4>
<p>but it seemed like <span class="user-mention" data-user-id="119009">@eddyb</span> was hoping to make progress on applying this lint to rustc source itself.</p>



<a name="168050502"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050502" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050502">(Jun 13 2019 at 14:32)</a>:</h4>
<blockquote>
<p>I bascially wanted to check about prioritization here</p>
</blockquote>
<p>this is tricky</p>



<a name="168050503"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050503" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050503">(Jun 13 2019 at 14:32)</a>:</h4>
<p>so anyone who wants to fight for P-high (or just fix the bug), feel free to chime in on the issue.</p>



<a name="168050507"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050507" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050507">(Jun 13 2019 at 14:32)</a>:</h4>
<p>I feel like Rust 2018 is "not done" when it comes to this stuff</p>



<a name="168050512"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050512" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050512">(Jun 13 2019 at 14:32)</a>:</h4>
<p>and in theory it'd be good to prioritize</p>



<a name="168050523"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050523" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050523">(Jun 13 2019 at 14:32)</a>:</h4>
<p>but I also feel like we're oversubscribed as is</p>



<a name="168050549"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050549" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050549">(Jun 13 2019 at 14:33)</a>:</h4>
<p>Given that we have 18 nominated issues to get through, I'm just going to say "I advertised this"</p>



<a name="168050551"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050551" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050551">(Jun 13 2019 at 14:33)</a>:</h4>
<p>and move along</p>



<a name="168050553"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050553" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050553">(Jun 13 2019 at 14:33)</a>:</h4>
<p>have we pinged <span class="user-mention" data-user-id="129356">@Zack M. Davis</span> -- not sure if they're busy or what -- but they've done great work there</p>



<a name="168050581"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050581" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050581">(Jun 13 2019 at 14:33)</a>:</h4>
<p>next: "Coherence can be bypassed by an indirect impl for a trait object" <a href="https://github.com/rust-lang/rust/issues/57893" target="_blank" title="https://github.com/rust-lang/rust/issues/57893">#57893</a></p>



<a name="168050659"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050659" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050659">(Jun 13 2019 at 14:34)</a>:</h4>
<p>I am sad that this was filed in January but I dont' recall seeing it until now</p>



<a name="168050689"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050689" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050689">(Jun 13 2019 at 14:35)</a>:</h4>
<p>we do have some people who have taken a stab at trying to fix it</p>



<a name="168050703"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050703" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050703">(Jun 13 2019 at 14:35)</a>:</h4>
<p>On this one I guess the question is what the right fix is:<br>
1. make the assumption correct (ban some blanket impls)<br>
2. verify the assumption (what Aaron1011 suggested)<br>
And independently, I think <span class="user-mention" data-user-id="120791">@RalfJ</span>'s point:</p>
<blockquote>
<p>Once again, exploiting assumptions implicitly instead of inferring them to an explicit form proves to be an issue. This reminds me that we still implicitly exploit WF everywhere instead of turning that into explicit assumptions...</p>
</blockquote>
<p>is spot on.</p>



<a name="168050707"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050707" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050707">(Jun 13 2019 at 14:35)</a>:</h4>
<p>Hmm, I hadn't seen that, but I <em>did</em> have that same scenario filed in the back of my mind for "I bet this is broken"</p>



<a name="168050738"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050738" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050738">(Jun 13 2019 at 14:35)</a>:</h4>
<p>(Seems like we should try to address that via <a class="stream" data-stream-id="144729" href="/#narrow/stream/144729-wg-traits">#wg-traits</a> work)</p>



<a name="168050746"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050746" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050746">(Jun 13 2019 at 14:35)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> : who is good person to own this?</p>



<a name="168050769"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050769" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050769">(Jun 13 2019 at 14:36)</a>:</h4>
<p>(that was not me attempting to volunteer you as owner)</p>



<a name="168050846"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050846" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050846">(Jun 13 2019 at 14:36)</a>:</h4>
<p>its already tagged as A-traits, are there other tags to use to get attention of WG-traits?</p>



<a name="168050888"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050888" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050888">(Jun 13 2019 at 14:37)</a>:</h4>
<p>I'd volunteer <span class="user-mention" data-user-id="116009">@nikomatsakis</span>  <span aria-label="slight smile" class="emoji emoji-1f642" role="img" title="slight smile">:slight_smile:</span></p>



<a name="168050893"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050893" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050893">(Jun 13 2019 at 14:37)</a>:</h4>
<p>No, it's more a matter of bandwidth than anything.</p>



<a name="168050911"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168050911" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168050911">(Jun 13 2019 at 14:37)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> can I assign you to delegate to someone on WG-traits?</p>



<a name="168051005"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051005" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051005">(Jun 13 2019 at 14:38)</a>:</h4>
<p>Yes, let me think about this. There is another related issue as well I think (realted in a general sense)</p>



<a name="168051067"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051067" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051067">(Jun 13 2019 at 14:39)</a>:</h4>
<p>okay assigning to <span class="user-mention" data-user-id="116009">@nikomatsakis</span> with expectation that they will delegate</p>



<a name="168051082"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051082" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051082">(Jun 13 2019 at 14:39)</a>:</h4>
<p>/me makes a note</p>



<a name="168051181"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051181" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051181">(Jun 13 2019 at 14:40)</a>:</h4>
<p>next: "Limit dylib symbols" <a href="https://github.com/rust-lang/rust/issues/59752" target="_blank" title="https://github.com/rust-lang/rust/issues/59752">#59752</a></p>



<a name="168051199"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051199" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051199">(Jun 13 2019 at 14:40)</a>:</h4>
<p>(I plan next week at Moz All Hands to spend a big chunk of time concentrating on planning for traits WG, so I will prob wind up trying to factor the need to handle issues like this then)</p>



<a name="168051213"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051213" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051213">(Jun 13 2019 at 14:40)</a>:</h4>
<blockquote>
<p>next: "Limit dylib symbols" <a href="https://github.com/rust-lang/rust/issues/59752" target="_blank" title="https://github.com/rust-lang/rust/issues/59752">#59752</a></p>
</blockquote>
<p>oh , that's nominated for T-release; never mind.</p>



<a name="168051231"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051231" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051231">(Jun 13 2019 at 14:41)</a>:</h4>
<p>(but it hasn't merged? okay well I don't know, its fine)</p>



<a name="168051275"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051275" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051275">(Jun 13 2019 at 14:41)</a>:</h4>
<p>likewise "crater run to estimate impact of full NLL transition" <a href="https://github.com/rust-lang/rust/issues/60680" target="_blank" title="https://github.com/rust-lang/rust/issues/60680">#60680</a> was nominated largely for lang team</p>



<a name="168051298"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051298" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051298">(Jun 13 2019 at 14:41)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> I removed t-compiler from that PR so you don't get bothered by it again</p>



<a name="168051375"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051375" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051375">(Jun 13 2019 at 14:42)</a>:</h4>
<p>and likewise I <strong>think</strong> "Use const generics for array impls" <a href="https://github.com/rust-lang/rust/issues/61415" target="_blank" title="https://github.com/rust-lang/rust/issues/61415">#61415</a> is really only nominated for T-libs</p>



<a name="168051392"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051392" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051392">(Jun 13 2019 at 14:42)</a>:</h4>
<p>(but here's peoples chance to chime in arguing that we <em>do</em> need to talk about <a href="https://github.com/rust-lang/rust/issues/61415" target="_blank" title="https://github.com/rust-lang/rust/issues/61415">#61415</a>)</p>



<a name="168051394"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051394" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051394">(Jun 13 2019 at 14:42)</a>:</h4>
<p>No; it is really nominated for t-lang</p>



<a name="168051419"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051419" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051419">(Jun 13 2019 at 14:42)</a>:</h4>
<p>okay, next one is <strong>definitely</strong> us</p>



<a name="168051426"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051426" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051426">(Jun 13 2019 at 14:43)</a>:</h4>
<p>next: " 1.30 -&gt; 1.31 dylib late-binding regression with less recent Linux distro toolchains." <a href="https://github.com/rust-lang/rust/issues/61539" target="_blank" title="https://github.com/rust-lang/rust/issues/61539">#61539</a></p>



<a name="168051438"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051438" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051438">(Jun 13 2019 at 14:43)</a>:</h4>
<p><span class="user-mention" data-user-id="119009">@eddyb</span> are you around?</p>



<a name="168051466"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051466" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051466">(Jun 13 2019 at 14:43)</a>:</h4>
<p>They believe this is a linker bug</p>



<a name="168051487"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051487" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051487">(Jun 13 2019 at 14:43)</a>:</h4>
<p>but there are other ways to work around it from our end</p>



<a name="168051495"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051495" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051495">(Jun 13 2019 at 14:43)</a>:</h4>
<p>e.g. <code>-Z plt=yes</code></p>



<a name="168051554"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051554" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051554">(Jun 13 2019 at 14:44)</a>:</h4>
<p>which leads us to ask: How much work should we do to try to make the linker(s) happy?</p>



<a name="168051564"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051564" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051564">(Jun 13 2019 at 14:44)</a>:</h4>
<p>or do we first need to take the effort to confirm that it truly is a linker bug?</p>



<a name="168051604"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051604" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051604">(Jun 13 2019 at 14:45)</a>:</h4>
<p>There is this note from <span class="user-mention" data-user-id="123586">@nagisa</span> "To me it seems that exactly what happens with PLT here is prevention and the core issue still remains regardless of whether PLT is enabled or not." which implies that we should have someone looking at this</p>



<a name="168051672"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051672" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051672">(Jun 13 2019 at 14:45)</a>:</h4>
<p>the good news is, as the title says, the problem is exposed by "less recent" (aka "<em>old(-ish?)</em>") toolchains</p>



<a name="168051753"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051753" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051753">(Jun 13 2019 at 14:46)</a>:</h4>
<p>i.e binutils 2.28.1 vs binutils 2.30</p>



<a name="168051782"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051782" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051782">(Jun 13 2019 at 14:47)</a>:</h4>
<p>Anyway I know <span class="user-mention" data-user-id="119009">@eddyb</span> wanted it discussed</p>



<a name="168051788"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051788" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051788">(Jun 13 2019 at 14:47)</a>:</h4>
<p>and I didn't know what priority to assign to it</p>



<a name="168051811"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051811" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051811">(Jun 13 2019 at 14:47)</a>:</h4>
<p>because I cannot immediately tell which Linux distributions (or versions  of distributions) are likely to be affected by this</p>



<a name="168051821"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051821" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051821">(Jun 13 2019 at 14:47)</a>:</h4>
<p>I could just assign it P-high but then I'd really want to make sure it has an owner.</p>



<a name="168051933"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051933" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051933">(Jun 13 2019 at 14:48)</a>:</h4>
<p>or maybe we revert PR <a href="https://github.com/rust-lang/rust/issues/54592" target="_blank" title="https://github.com/rust-lang/rust/issues/54592">#54592</a> to "resolve" it? I cannot imagine that being a great solution.</p>



<a name="168051936"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051936" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051936">(Jun 13 2019 at 14:48)</a>:</h4>
<p>hmm</p>



<a name="168051986"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051986" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051986">(Jun 13 2019 at 14:49)</a>:</h4>
<p>I also don't want to punish <span class="user-mention" data-user-id="123586">@nagisa</span> for speaking up in the comment thread of <a href="https://github.com/rust-lang/rust/issues/61539" target="_blank" title="https://github.com/rust-lang/rust/issues/61539">#61539</a>, but they do seem like a natural person to assign it to</p>



<a name="168051997"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168051997" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168051997">(Jun 13 2019 at 14:49)</a>:</h4>
<p>maybe I go P-high and assign it to <span class="user-mention" data-user-id="123586">@nagisa</span> and myself?</p>



<a name="168052077"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052077" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052077">(Jun 13 2019 at 14:50)</a>:</h4>
<p>I guess given the lack of commentary here, that's the easiest path forward in this meeting.</p>



<a name="168052121"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052121" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052121">(Jun 13 2019 at 14:50)</a>:</h4>
<p>too bad <span class="user-mention" data-user-id="119009">@eddyb</span>'s not here to provide more context</p>



<a name="168052180"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052180" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052180">(Jun 13 2019 at 14:51)</a>:</h4>
<p>next: "error updating smallvec in rustc" <a href="https://github.com/rust-lang/rust/issues/61549" target="_blank" title="https://github.com/rust-lang/rust/issues/61549">#61549</a></p>



<a name="168052216"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052216" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052216">(Jun 13 2019 at 14:51)</a>:</h4>
<p>I should have probably cleared nomination here; it seems like its been resolved (and its assigned to me)</p>



<a name="168052287"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052287" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052287">(Jun 13 2019 at 14:52)</a>:</h4>
<p>((this is a conseuqence of not getting through all the supposed pre-passes of pre-triage))</p>



<a name="168052327"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052327" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052327">(Jun 13 2019 at 14:52)</a>:</h4>
<p>the next one, "TypeId differs between builds" <a href="https://github.com/rust-lang/rust/issues/61553" target="_blank" title="https://github.com/rust-lang/rust/issues/61553">#61553</a>, is really a T-lang thing</p>



<a name="168052337"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052337" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052337">(Jun 13 2019 at 14:52)</a>:</h4>
<p>but if people want to speak up here about it, feel free.</p>



<a name="168052385"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052385" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052385">(Jun 13 2019 at 14:53)</a>:</h4>
<p>(You can see the last comments on the comment thread to see my take on it, and the issue filer's ... objection (?) to my take.)</p>



<a name="168052422"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052422" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052422">(Jun 13 2019 at 14:53)</a>:</h4>
<p>next: " ICE on nightly: "Forcing query with already existing DepNode."" <a href="https://github.com/rust-lang/rust/issues/61594" target="_blank" title="https://github.com/rust-lang/rust/issues/61594">#61594</a></p>



<a name="168052488"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052488" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052488">(Jun 13 2019 at 14:54)</a>:</h4>
<p>I left this nominated in the hopes that there would be people present who could discuss relationship with <a href="https://github.com/rust-lang/rust/issues/61530" target="_blank" title="https://github.com/rust-lang/rust/issues/61530">#61530</a></p>



<a name="168052520"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052520" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052520">(Jun 13 2019 at 14:54)</a>:</h4>
<p>I'm going to leave it nominated for now.</p>



<a name="168052531"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052531" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052531">(Jun 13 2019 at 14:54)</a>:</h4>
<p>okay lets do one more and then do a WG-checkin</p>



<a name="168052535"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052535" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052535">(Jun 13 2019 at 14:55)</a>:</h4>
<p>last for today: "Self as default type isnt typechecked" <a href="https://github.com/rust-lang/rust/issues/61631" target="_blank" title="https://github.com/rust-lang/rust/issues/61631">#61631</a></p>



<a name="168052563"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052563" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052563">(Jun 13 2019 at 14:55)</a>:</h4>
<p>not a high prio item; should discuss @ t-lang first</p>



<a name="168052569"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052569" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052569">(Jun 13 2019 at 14:55)</a>:</h4>
<p>to answer "is this a bug?"</p>



<a name="168052608"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052608" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052608">(Jun 13 2019 at 14:55)</a>:</h4>
<p>I assume all known cases where this could cause issues cause an ICE to occur?</p>



<a name="168052701"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052701" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052701">(Jun 13 2019 at 14:56)</a>:</h4>
<p>well it's checked on use</p>



<a name="168052709"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052709" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052709">(Jun 13 2019 at 14:56)</a>:</h4>
<p>I haven't seen any ICEs</p>



<a name="168052817"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052817" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052817">(Jun 13 2019 at 14:57)</a>:</h4>
<p>okay. Maybe I'll downgrade to P-medium next week</p>



<a name="168052830"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052830" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052830">(Jun 13 2019 at 14:57)</a>:</h4>
<p>I'll leave nomination tag on it for T-lang meeting.</p>



<a name="168052848"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052848" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052848">(Jun 13 2019 at 14:58)</a>:</h4>
<p>so with 3 minutes left</p>



<a name="168052906"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052906" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052906">(Jun 13 2019 at 14:58)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> anything to say about <span class="user-group-mention" data-user-group-id="1172">@WG-async-foundations</span> ?</p>



<a name="168052910"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052910" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052910">(Jun 13 2019 at 14:58)</a>:</h4>
<blockquote>
<p>last for today: "Self as default type isnt typechecked" <a href="https://github.com/rust-lang/rust/issues/61631" target="_blank" title="https://github.com/rust-lang/rust/issues/61631">#61631</a></p>
</blockquote>
<p>we did spend a lot of time defining the rules here --</p>



<a name="168052951"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052951" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052951">(Jun 13 2019 at 14:58)</a>:</h4>
<blockquote>
<p><span class="user-mention silent" data-user-id="116009">nikomatsakis</span> anything to say about <span class="user-group-mention" data-user-group-id="1172">@WG-async-foundations</span></p>
</blockquote>
<p>ok -- yes, very briefly:</p>



<a name="168052964"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052964" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052964">(Jun 13 2019 at 14:58)</a>:</h4>
<p>I hope to post a kind of general update blog post in any case</p>



<a name="168052973"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168052973" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168052973">(Jun 13 2019 at 14:58)</a>:</h4>
<p>we're still working down a list of <a href="https://github.com/rust-lang/rust/issues?q=is%3Aopen+is%3Aissue+label%3AAsyncAwait-Blocking" target="_blank" title="https://github.com/rust-lang/rust/issues?q=is%3Aopen+is%3Aissue+label%3AAsyncAwait-Blocking">blocking issues</a> that we currently think would prevent stabilization</p>



<a name="168053008"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168053008" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168053008">(Jun 13 2019 at 14:59)</a>:</h4>
<p>there's actually coming to be a number of smaller issues, so it may be a good time to do a push for volunteers</p>



<a name="168053121"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168053121" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168053121">(Jun 13 2019 at 15:00)</a>:</h4>
<p>that said, I think the two most <em>major</em> issues are starting to get closed:</p>
<ul>
<li>I posted a PR around the lifetime stuff that is "close"</li>
<li>I think <span class="user-mention" data-user-id="116883">@tmandry</span> has been close to improving the size of the futures we create</li>
</ul>



<a name="168053152"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168053152" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168053152">(Jun 13 2019 at 15:00)</a>:</h4>
<p>we are working on the "async book", that will explain how async I/O works and the async-await feature in praticular</p>



<a name="168053168"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168053168" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168053168">(Jun 13 2019 at 15:00)</a>:</h4>
<p>and finally one big area where we need to do more work is around testing</p>



<a name="168053184"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168053184" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168053184">(Jun 13 2019 at 15:00)</a>:</h4>
<p>trying to make a comprehensive set of test cases, <span class="user-mention" data-user-id="126931">@centril</span> and I have talked some but nobody has been able to put significant time into that</p>



<a name="168053196"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168053196" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168053196">(Jun 13 2019 at 15:00)</a>:</h4>
<p>seems like a good case where we might be able to outline the work needed and volunteer it, but maybe not</p>



<a name="168053230"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168053230" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168053230">(Jun 13 2019 at 15:01)</a>:</h4>
<p>ok that's my 3 minute summary :) ping in <a class="stream" data-stream-id="187312" href="/#narrow/stream/187312-wg-async-foundations">#wg-async-foundations</a> if you'd like more details I geuss :)</p>



<a name="168053349"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168053349" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168053349">(Jun 13 2019 at 15:02)</a>:</h4>
<p>okay, thanks to everyone in <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> for attending!</p>



<a name="168053385"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-13%20%2354818/near/168053385" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-13.20.2354818.html#168053385">(Jun 13 2019 at 15:02)</a>:</h4>
<blockquote>
<p>we're still working down a list of <a href="https://github.com/rust-lang/rust/issues?q=is%3Aopen+is%3Aissue+label%3AAsyncAwait-Blocking" target="_blank" title="https://github.com/rust-lang/rust/issues?q=is%3Aopen+is%3Aissue+label%3AAsyncAwait-Blocking">blocking issues</a> that we currently think would prevent stabilization</p>
</blockquote>
<p>just a note: this is intended to cover major diagnostic or other usability issues as well as (clearly) backwards incompatible semantic changes</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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